12128634 has 24 divisors (see below), whose sum is σ = 30033120. Its totient is φ = 3465288.

The previous prime is 12128621. The next prime is 12128639. The reversal of 12128634 is 43682121.

12128634 is a `hidden beast` number, since 1 + 2 + 1 + 28 + 634 = 666.

12128634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12128598 and 12128607.

It is not an unprimeable number, because it can be changed into a prime (12128639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48004 + ... + 48255.

It is an arithmetic number, because the mean of its divisors is an integer number (1251380).

Almost surely, 2^12128634 is an apocalyptic number.

12128634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12128634 is an abundant number, since it is smaller than the sum of its proper divisors (17904486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12128634 is a wasteful number, since it uses less digits than its factorization.

12128634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96274 (or 96271 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 12128634 is about 3482.6188421933. The cubic root of 12128634 is about 229.7579937172.

The spelling of 12128634 in words is "twelve million, one hundred twenty-eight thousand, six hundred thirty-four".